The idea started as an advanced flash light that would automatically point at the ground with stabilisation. Then came the idea of 3D scanning to light up specific objects, and avoid shining in peoples eyes.
That led to the idea of having a stabilised projection device, allowing for moving a curser around with a projection device.
That then later led to the idea of a decentralised network of projectors, all supporting the same image, and using a phone or pointing device as a way to display a curser on a projected image.
The idea of pointing it at a computer screen and seeing information about what’s on screen. Being able to swipe images from one screen to the device and then to another screen. Supported by projectors potentially.